13 Jul 2023
NGC 6823 is an open cluster surrounded by a large faint emission nebula called Sh2-86. The whole area of nebulosity is often referred to as NGC 6820
NGC 6823
3 credit
Filter | Avg Exp (s) | Total Exposure | Subframes |
|---|---|---|---|
| Halpha | 267 | 1h20m | 18 |
| SII | 333 | 1h40m | 18 |
| OIII | 300 | 1h25m | 17 |